Assessment of radioactivity levels and its associated radiological Hazards in soil of Kifl city/Iraq

Abstract

The aim of this study is to measure the natural radioactivity concentration in the soil samples of the kifl area by using NaI(Tl) detector. The levels of natural radioactivity were measured for 26 samples in Kifl district for three different depths (0-5) cm, (5-15) cm, (15-20). The average specific activity of potassium-40, thorium-232 and uranium-238 were (140±1.82, 14.28±0.59 and 8.50±0.47) Bq/kg in depth (0-5) cm, (134.28±1.78, 13.64±0.59 and 7.31±0.44) Bq/kg in depth (5-15) cm, (127.36 ±1.73, 12.72±0.55 and 6±0.419) Bq/kg in depth (15-20) cm. The results of the study were within the permissible limits when compared with the values on UNSCEAR organization (412 for 40K, 35 for 238U, 45 for 232Th, 370 for Raeq, <1 for H(ex), <1 for H(in), 6 for Iγ, 59 for D(out), 84 for D(in), 0.07 for AEDE(out) and 0.4 for AEDE(in).